The parents suggested in the hotel room but their kids were anxious to camp out during the trip.
A. sleep
B. to sleep
C. sleeping
D. having slept
网友回答
A. sleep
B. to sleep
(答案→)C. sleeping
D. having slept
解析：动词 suggest后接另一个动词时，该动词习惯上要用动名词。另外，从句意上看，该动名词并不表示完成，所以不用完成式。